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63 lines
2.4 KiB
Go
63 lines
2.4 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package e2e_node
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import (
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"time"
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"github.com/golang/glog"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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)
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// This test is marked [Disruptive] because the Kubelet temporarily goes down as part of of this test.
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var _ = framework.KubeDescribe("DynamicKubeletConfiguration [Feature:DynamicKubeletConfig] [Serial] [Disruptive]", func() {
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f := framework.NewDefaultFramework("dynamic-kubelet-configuration-test")
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Context("When a configmap called `kubelet-{node-name}` is added to the `kube-system` namespace", func() {
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It("The Kubelet on that node should restart to take up the new config", func() {
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// Get the current KubeletConfiguration (known to be valid) by
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// querying the configz endpoint for the current node.
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kubeCfg, err := getCurrentKubeletConfig()
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framework.ExpectNoError(err)
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glog.Infof("KubeletConfiguration - Initial values: %+v", *kubeCfg)
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// Change a safe value e.g. file check frequency.
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// Make sure we're providing a value distinct from the current one.
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oldFileCheckFrequency := kubeCfg.FileCheckFrequency.Duration
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newFileCheckFrequency := 11 * time.Second
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if kubeCfg.FileCheckFrequency.Duration == newFileCheckFrequency {
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newFileCheckFrequency = 10 * time.Second
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}
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kubeCfg.FileCheckFrequency.Duration = newFileCheckFrequency
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// Use the new config to create a new kube-{node-name} configmap in `kube-system` namespace.
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// Note: setKubeletConfiguration will return an error if the Kubelet does not present the
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// modified configuration via /configz when it comes back up.
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err = setKubeletConfiguration(f, kubeCfg)
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framework.ExpectNoError(err)
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// Change the config back to what it originally was.
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kubeCfg.FileCheckFrequency.Duration = oldFileCheckFrequency
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err = setKubeletConfiguration(f, kubeCfg)
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framework.ExpectNoError(err)
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})
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})
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})
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